CN100514414C - Display panel, display device, semiconductor integrated circuit, and electronic device - Google Patents
Display panel, display device, semiconductor integrated circuit, and electronic device Download PDFInfo
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- CN100514414C CN100514414C CNB2005800101196A CN200580010119A CN100514414C CN 100514414 C CN100514414 C CN 100514414C CN B2005800101196 A CNB2005800101196 A CN B2005800101196A CN 200580010119 A CN200580010119 A CN 200580010119A CN 100514414 C CN100514414 C CN 100514414C
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
Abstract
It is possible to realize a display panel having a high display quality. A drive circuit driving a display panel having a display area where sub-pixels as minimum display units are arranged in a matrix includes: a set of digital/analog conversion circuits for converting signal line data corresponding to the respective sub-pixels into analog values; a wiring pattern for giving gradation reference voltage to the set of digital/analog conversion circuits according to the corresponding colors; and a sample hold circuit for sample-holding the gradation reference voltage corresponding to the respective colors during a non-light-emission period of the display area and applying the gradation reference voltage to the corresponding wiring pattern during a light-emission period of the display area.
Description
Technical field
The present invention relates to a kind of display panel, wherein press arranged as the sub-pixel of minimum display unit with viewing area.The invention still further relates to SIC (semiconductor integrated circuit) with the built-in drive circuit that is used to drive display panel.More particularly, the present invention relates to a kind of display device, wherein display panel is incorporated into same shell with the driving circuit that is used for display panel.The invention still further relates to a kind of electronic installation of having integrated display panel or being used for the driving circuit of display panel.
Background technology
Wherein come the display device of display image to comprise flat-panel monitor by sub-pixel by matrix arrangements.Flat-panel monitor be comprise the shape with plate shell display device and have flat screen.The volume of the volume ratio CRT of flat-panel monitor (cathode-ray tube (CRT)) type display device is littler.Therefore, flat-panel monitor is popularized in recent years widely.
Such flat-panel monitor is divided into two classes, comprises emissive type and non-emissive type.The emissive type flat-panel monitor comprises such as EL (electroluminescence) display, LED (light emitting diode) display, PDP (Plasmia indicating panel) display and FED (field-emitter display).Non-emissive type flat-panel monitor comprises such as LCD.
In any display, the ON/OFF of each sub-pixel all is that the driving by active component realizes.The drive signal that it should be noted that active component is supplied with by signal wire.A plurality of active components are arranged on the signal wire, and drive signal is only supplied with one of active component by scanning line selection.
For a signal wire provides one drive circuit.One drive circuit is by forming such as sampling/holding circuit and D/A switch circuit.Usually, the driving circuit of the type is as the peripheral circuit of display panel and form (referring to TOHKEMY 2003-108033 communique and TOHKEMY 2003-228341 communique).
Have a talk about along band, the display characteristic of display is subjected to influences such as aging deterioration, temperature variation.In order to keep the such influence of the essential minimizing of high display quality.Regulating a kind of of item is the gray scale reference voltage of D/A change-over circuit.By convention, the adjusting of gray scale reference voltage is sought unity of action to all D/A change-over circuits that form driving circuit.
Yet the physics luminance change need not unanimity to the influence of display performance.In other words, even luminance change is same physically, the variation of being discovered by naked eyes also is inconsistent.And although the deterioration in characteristics of self-emission device is proportional with the accumulative total luminous quantity, yet the accumulative total luminous quantity of single color need not to be equal to each other.
Summary of the invention
The configuration that an aspect of of the present present invention adopts the gray scale reference voltage of D/A change-over circuit to regulate single color.Another aspect of the present invention adopts the gray scale reference voltage to keep and supply with at light period the circuit arrangement of D/A change-over circuit in non-light period sampling.
Description of drawings
Fig. 1 shows the view of example of the configuration of display panel;
Fig. 2 shows the view of another example of the configuration of display panel;
Fig. 3 shows the view of example of the configuration of driving circuit;
Fig. 4 shows the view of example of the basic configuration of D/A change-over circuit;
Fig. 5 is that explanation is at the maximum reference voltage of supplying with the D/A circuit and the view of the relation between the output voltage;
Fig. 6 is the view of the I/O characteristic of explanation D/A change-over circuit;
Fig. 7 shows the view of the embodiment of sample-and-hold circuit;
Fig. 8 is the view of the relation of key diagram image signal between light period and non-light period;
Fig. 9 shows the view of another example of the configuration of driving circuit;
Figure 10 is that explanation is at the middle reference voltage of supplying with the D/A circuit and the view of the relation between the output voltage;
Figure 11 is the view of the I/O characteristic of explanation D/A change-over circuit;
Figure 12 shows the view of another example of the configuration of driving circuit;
Figure 13 shows the view of another example of the configuration of driving circuit;
Figure 14 shows the view of an example again of the configuration of driving circuit;
Figure 15 shows the view of an example again of the configuration of driving circuit;
Figure 16 is explanation in brightness and depends on the view of the relation between the light period of difference of drive condition;
Figure 17 is the view of explanation luminosity and the relation between the life-span;
Figure 18 shows the view of an example again of the configuration of driving circuit;
Figure 19 A is the view of the example of the different light period corresponding scanning line strobe pulses with two of explanation with Figure 19 B;
Figure 20 shows the view of the embodiment of display-object decision circuit; And
Figure 21 shows the view of example of the configuration of electronic installation.
Embodiment
The embodiment of different aspect of the present invention hereinafter will be described.It should be noted that for the configuration that does not illustrate especially in the accompanying drawings or in instructions, do not have description, used the known or known technology of described technical field.And following embodiment is embodiments of the invention only, and the invention is not restricted to such embodiment.
(1) example of the configuration of display panel
The example of the configuration that is incorporated into the display panel in the display device at first, has been described.It should be noted that display device can be such as EL display (organic or inorganic), light-emitting diode display, PDP display, FED display etc.
Display panel can be classified as those driving circuits and make up on the substrate different with the panel substrate with those driving circuits at structure on the panel substrate.The former ios dhcp sample configuration IOS DHCP as shown in Figure 1, the latter's ios dhcp sample configuration IOS DHCP is as shown in Figure 2.It should be noted that the panel substrate uses glass substrate or plastic substrate usually.
Display panel as shown in Figure 1 and display panel as shown in Figure 2 have same basically configuration, yet they are only different on the construction method of driving circuit.For example, in the viewing area, be arranged as the sub-pixel of minimum display unit.Each sub-pixel is corresponding with one of color that forms a pictorial element (pixel).In other words, a pixel is corresponding with R (red), G (green) and three sub-pixels of B (indigo plant).
Active component cooperates with each sub-pixel.Driving circuit drives such active component.Driving circuit comprises vertical drive circuit and horizontal drive circuit.Vertical drive circuit is used for selecting one of a plurality of sweep traces.Simultaneously, horizontal drive circuit is used for drive signal is applied to signal wire.
(2) example of driving circuit
Embodiment mainly as the driving circuit of horizontal drive circuit has hereinafter been described.It should be noted that unless otherwise vertical drive circuit is used known circuit arrangement.
(a) ios dhcp sample configuration IOS DHCP 1
(a-1) circuit arrangement
Fig. 3 shows the ios dhcp sample configuration IOS DHCP of horizontal drive circuit.This horizontal drive circuit comprises D/A change-over circuit 21, is used for the wiring route pattern 22 of gray scale reference voltage and the sample-and-hold circuit 23 that respectively is used for the output gray level reference voltage as critical piece.
The number of the D/A change-over circuit 21 that is provided equates with the number of signal wire 24.Specifically, the number of D/A change-over circuit 21 is arranged the number of the horizontal sub-pixel that equals the viewing area.Each D/A change-over circuit 21 produces driving voltage (simulation) and driving voltage is applied to corresponding signal lines 24 according to signal wire data (numeral).Consequently, appear on the sub-pixel of the sweep trace selected by vertical drive circuit and the cross section between the signal wire according to the luminosity of driving voltage.
Fig. 4 shows the example of the configuration of D/A change-over circuit 21.Fig. 4 has described to be called as the D/A change-over circuit of 2R-R type ladder shaped resistance type.This expression branch road resistance is 2R (2 * R), and the resistance of whole D/A change-over circuit is R.
At this configuring condition, the size of lighting the electric current that affluent-dividing of every in order in succession appearance crosses from the branch of reference power supply (maximum reference voltage) side just is reduced to 1/2.Flow into the input end of one of switch S 1 to S4 (under 4 situations) through the electric current of branch.It should be noted that reference power supply Vref is corresponding with gray scale reference voltage V ref-R, Vref-G and Vref-B.
Each switching response signal wire is controlled to ON/OFF.For opening to the operational amplifier side, it provides the electric current that flows to this place at each switch, but at it for closing to the ground connection side, provide the electric current that flows through this place.Consequently, flow into the output resistance r of operational amplifier corresponding to the electric current (from the electric current sum of switch) of digital value.The voltage that appear on the output resistance r this moment is output voltage.
Fig. 5 shows the functional configuration example of D/A change-over circuit 21.As shown in Figure 5, D/A change-over circuit 21 work like this makes it optionally will appear at the ladder shaped resistance R1 that is connected in series, R2..., one of dividing potential drop output on the node of Rn output.In other words, D/A change-over circuit 21 is worked like this and is made its output dividing potential drop from the point of crossing of selected and view data (signal wire data) export.
In addition, reference power supply is maximum reference voltage V O (0).Provide by the number of ladder shaped resistance and the ratio of resistance to VO (n) by reference power supply being carried out the middle reference voltage VO (1) that dividing potential drop obtains simultaneously.It should be noted that each ohmically voltage (for example, the voltage difference between VO (0) and the VO (1)) with fixing than separating.This is because have a mind to prevent that the number to resistance equals essential grey purpose needs.Consequently, the simplification of circuit is expected.
Fig. 6 illustrates that grayscale voltage VO (0), VO (1) are to the relation between VO (n) and the corresponding I/O.The smoothness of gamma curve is regulated by the number and the resistance value ratio of divider resistance.Optimization according to the gamma curve of device property is also recently regulated by divider resistance number and resistance.
The middle reference voltage VO (1) that it should be noted that single color to VO (n) inequality aspect the interlock connection of the adjusting of the corresponding gray scale reference voltage V of color ref-R, Vref-G and Vref-B (increase or reduce).In other words, gamma curve as shown in Figure 6 is being out of shape on the direction up or down.Consequently, be used for must grey purpose driving voltage (simulation) output can when keeping resolution, obtain.
Such adjusting to single color realizes by the wiring route pattern 22 (22R, 22G, 22B) that is connected to D/A change-over circuit 21 for single color.For example, be connected to and the corresponding D/A change-over circuit 21 of R (red) with the corresponding wiring route pattern of reference power supply Vref-R 22R.
Similarly, be connected to and the corresponding D/A change-over circuit 21 of G (green) with the corresponding wiring route pattern of gray scale reference voltage V ref-G 22G.Similarly, be connected to and the corresponding D/A change-over circuit 21 of B (indigo plant) with the corresponding wiring route pattern of gray scale reference voltage V ref-B 22B.
These three wiring route patterns are independent separately, and the gray scale reference voltage can be applied in these three wiring route patterns that are independent of other two wiring route patterns each.For example, have only gray scale reference voltage to raise independently or to reduce to the D/A change-over circuit that produces the sub-pixel group corresponding with R (red) form and aspect.
As indicated above, if the gray scale reference voltage raises or reduces, then the driving voltage (simulation) that is output also can be raised or reduce.It should be noted that the load capacitor with enough high capacitances is used for load capacitor 26.
Sample-and-hold circuit 23 will be applied to three wiring route patterns with the corresponding gray scale reference voltage of single color.Fig. 7 shows the examples of circuits of sample-and-hold circuit 23.Should note providing a sample-and-hold circuit to each color.
Sample-and-hold circuit 23 is formed by input side switch 25, load capacitor 26, outgoing side switch 27 and buffering circuit 28.Here, when input side switch 25 is in closure state and outgoing side switch 27 is in open-circuit condition in addition, 26 chargings of 23 pairs of load capacitors of sample-and-hold circuit.In other words, the gray scale reference voltage keeps by load capacitor 26.
On the other hand, when input side switch 25 is in open-circuit condition and the outgoing side switch is in closure state in addition, sample-and-hold circuit 23 will be applied to wiring route pattern 22 by buffer circuit 28 by the gray scale reference voltage that load capacitor 26 keeps.Usually, voltage follower is used for buffer circuit 28.
Sample-and-hold circuit 23 is sampled in non-light period and is kept gray scale reference voltage (simulation) and apply the gray scale reference voltage in light period.Therefore, in non-light period, input side switch 25 is controlled in closure state and outgoing side switch 27 is controlled in open-circuit condition.On the other hand, in light period, input side switch 25 is controlled in open-circuit condition and outgoing side switch 27 is controlled in closure state.
Non-light period is illustrated in signal wire data in this cycle and is not superimposed upon cycle on the picture signal.Fig. 8 shows the waveform of picture signal.The part of being indicated by oblique line among Fig. 8 is for wherein existing the picture signal light period.
Simultaneously, forward position, edge and comprise that the sync section of vertical synchronizing signal is non-light period, back.The scan method that should note picture signal can be any method line by line and staggered scanning method.
For example, according to XBA (XGA (Extended Graphics Array)) standard of VESA (VESA), 38 lines in 806 horizontal scanning lines form non-light period, and 768 remaining lines form light period.Can in each so non-light period, finish the setting of gray scale reference voltage and can in each light period, be used for sample-and-hold circuit 23 by the circuit of stable supplying gray scale reference voltage.
(a-2) display action
The display action of the display device that comprises the horizontal drive circuit with aforesaid sort circuit configuration is described now.At first, be imported into each D/A change-over circuit 21 with the corresponding picture signal of each pixel (sub-pixel) (signal wire data).Naturally, the gray scale reference voltage of D/A change-over circuit 21 has been set to corresponding sample-and-hold circuit 23.
View data (signal wire data) is converted to the analogue value and is applied to corresponding signal lines 24 by corresponding D/A change-over circuit 21.The current potential of signal wire 24 is supplied with luminescent substance or light-emitting component by the active component that is controlled to active state by vertical drive circuit.
Therefore, can obtain the luminosity represented according to the gray scale of picture signal.Should notice that tone depends on the luminosity and the gray scale of the three primary colours (RGB) that form a pixel.All carrying out such control in the viewing area.Therefore, image shows in the viewing area.
(a-3) effect that obtains by ios dhcp sample configuration IOS DHCP 1
By adopting the horizontal drive circuit according to ios dhcp sample configuration IOS DHCP 1, the characteristics of luminescence of sub-pixel can be conditioned each color.Thereby the balance of color harmony luminosity can be adjusted to optimum condition according to the glow color properties of materials.In other words, can realize the further enhancing and the optimization of display quality.
And, also can be utilized to the variation of the characteristics of luminescence that causes by aging deterioration (material lifetime etc.) and the adjusting of temperature variation the regulatory function of each color.The variation of the characteristic of for example, knowing in advance can be stored in the external system and reflect on the maximum reference voltage that is provided by external system.
It should be noted that also can in the adjusting of gray scale reference voltage, reflect for measurement result in real time according to measurement.To be the actual measured value of basis in real time, show state normally can be maintained good state by feedback.
And, can be arranged so that the D/A conversion characteristic is stable by in non-light period, supplying with the gray scale reference voltage from sample-and-hold circuit 23 to D/A change-over circuits 21.It should be noted that at the gray scale reference voltage also under the situation that light period is normally supplied with, the possibility that exists the gray scale reference voltage to be changed by the stack of noise, and exist and can make the unsettled possibility of D/A conversion characteristic.
(b) ios dhcp sample configuration IOS DHCP 2
(b-1) circuit arrangement
Fig. 9 shows another ios dhcp sample configuration IOS DHCP of horizontal drive circuit.Horizontal drive circuit has and the basic configuration identical according to the horizontal drive circuit of ios dhcp sample configuration IOS DHCP 1.In the present embodiment, the circuit arrangement example that the conversion characteristic of D/A change-over circuit 21 wherein can be provided with has more subtly been described.
Specifically, the circuit arrangement of having described wherein not only maximum reference voltage but also all can individually having been regulated as the middle reference voltage of gray scale reference voltage.This circuit arrangement is effectively, and gamma curve presents difformity or can use linear I/O characteristic in different colours usually.
The configuration of present embodiment uniqueness is that a plurality of gray scale reference voltages are applied to each D/A change-over circuit 21.Therefore, the number of essential sample-and-hold circuit 23 equals to be used for three times of number that the gray scale reference voltage of each color is provided with.The number of essential wiring route pattern 22 also equates.
Figure 10 shows the concept nature configuration of each D/A change-over circuit 21, and wherein n+1 gray scale reference voltage is a color setting.Under the situation of present embodiment, a plurality of gray scale reference voltages that produced by external system are applied on a plurality of nodes of trapezoidal divider resistance.Thereby the voltage between the adjacent node that reference voltage is applied in can freely be controlled.
Consequently, the gamma curve of single color uniqueness can be set as shown in figure 11.
For example, the I/O characteristic of R (red) can form linear I/O characteristic.Simultaneously, for example the I/O characteristic of G (green) can form the I/O characteristic of the output power higher than B (indigo plant).And, depend on that it also is possible that the I/O characteristic that differs from one another is provided as the gray level (transverse axis among Figure 11) of the I/O characteristic of G (green) and B (indigo plant).Under the situation of Figure 11, the I/O characteristic of G (green) and B (indigo plant) has partly been showed the luminance change of strengthening at its high radiance, but on the contrary, has partly showed the luminance change of shrinking in its middle luminosity.
(b-2) effect that obtains by ios dhcp sample configuration IOS DHCP 2
Under the situation of ios dhcp sample configuration IOS DHCP 2, can realize the following effect except that the effect of ios dhcp sample configuration IOS DHCP 1.At first, can in color and luminosity, realize regulating in more detail than configuration example 1.And, equally for anti-aging deterioration or environmental change, can carry out than configuration example 1 and regulate in more detail.
And ios dhcp sample configuration IOS DHCP 2 can be carried out the conversion characteristic optimum of response luminosity level.Therefore, can be to showing that material provides optimum display characteristic.For example, for the demonstration of text, can produce the grayscale voltage of additional importance to contrast.And, for example for the demonstration of film, can produce the grayscale voltage of additional importance to the expressive ability of middle gray scale.
In addition, in the middle of being illustrated in, the additional importance of the expressive ability of middle gray scale increases variation (light quantity variation) in the luminosity zone about the output voltage of the variation of luminosity level (view data).Be above-mentioned such function, will should respond displaying contents etc. usually by the reference voltage group that external system produces and be transformed.
For example, can prepare to produce circuit so that select corresponding grayscale voltage to produce the output of one of circuit according to display mode with the corresponding many group grayscale voltages of single reference voltage group.The conversion of display mode is by being realized by user's operational order or automatic discriminant function.
Perhaps, can be stored in the storer with the corresponding gray scale reference voltage of single display mode group so that one of selected or reference voltage group of distinguishing automatically produce one of circuit by grayscale voltage and produce.
(c) ios dhcp sample configuration IOS DHCP 3
(c-1) circuit arrangement
Figure 12 shows the another ios dhcp sample configuration IOS DHCP of horizontal drive circuit.This horizontal drive circuit has the configuration that suitable gray scale reference voltage is digitally imported.In other words, to have the numerical data that is fit to provide the gray scale reference voltage be the configuration of supplying with from external system to this horizontal circuit.
Therefore, arranged to have the horizontal drive circuit that is similar to those configurations except that the D/A change-over circuit 29 that uses for the generation of gray scale reference voltage in above-mentioned ios dhcp sample configuration IOS DHCP 1 and 2.Yet, arrange that in the circuit different D/A change-over circuit 29 also is possible with horizontal drive circuit.
In this example, the digital signal line of external system and horizontal drive circuit (the D/A change-over circuit 29) width by having several in each color is connected to each other.Specifically, the bit width of each color is represented that by n external system and horizontal drive circuit (D/A change-over circuit 29) are connected to each other by 3 * n digital signal line.
(c-2) effect that obtains by ios dhcp sample configuration IOS DHCP 3
Under the situation of this ios dhcp sample configuration IOS DHCP 3, can reduce generation source (D/A change-over circuit 29) to the wiring route length of sample-and-hold circuit 23 from the gray scale reference voltage.Thereby, can reduce The noise.
And, owing to the connection to external system is digitized, can reduce the influence of the external noise when the gray scale reference voltage writes sample-and-hold circuit equally.
Under the situation of this circuit arrangement, be used to provide the external system of gray scale reference voltage value needn't handle a plurality of different aanalogvoltages.Consequently, external system only need be handled a plurality of different aanalogvoltages.In this mode, can realize the simplification of external system.
(d) ios dhcp sample configuration IOS DHCP 4
(d-1) circuit arrangement
Figure 13 shows the another ios dhcp sample configuration IOS DHCP of horizontal drive circuit.The occasion that this horizontal drive circuit is suitable for providing the numerical data of gray scale reference voltage to be transfused to series form.It should be noted that horizontal drive circuit has and the basic configuration identical according to the horizontal drive circuit of ios dhcp sample configuration IOS DHCP 3.
Horizontal drive circuit has the configuration of uniqueness of the serial/parallel change-over circuit 30 of the level before the D/A change-over circuit 29 that is arranged in the generation that is used for the gray scale reference voltage.This serial/parallel change-over circuit 30 and single color are arranged with corresponding relation one to one.
The digital data conversion that each serial/parallel change-over circuit 30 will be imported with series form from external system is the numerical data of parallel form, and the numerical data that produces is outputed to corresponding sample-and-hold circuit 23.Therefore identical in the latter's configuration and the ios dhcp sample configuration IOS DHCP 3 omitted identical description.
(d-2) effect that obtains by ios dhcp sample configuration IOS DHCP 4
Under the situation of ios dhcp sample configuration IOS DHCP 4, can significantly reduce the externally number of the wiring route between the system and horizontal drive circuit (D/A change-over circuit 29) by arranging serial/parallel change-over circuit 30.Specifically, the essential number of the wiring route in ios dhcp sample configuration IOS DHCP 3 is 3 * n (3 looks * n position), and the number of the wiring route in ios dhcp sample configuration IOS DHCP 4 can reduce to 3.
May reduce the required zone of wiring route pattern equally.Occasion in horizontal drive circuit is incorporated into SIC (semiconductor integrated circuit) particularly, the number of lead-in wire can significantly reduce.Therefore can realize the miniaturization that encapsulates.Can expect that the assembly area further reduces too.Naturally, being similar to ios dhcp sample configuration IOS DHCP 3 can reduce the gray scale reference voltage and be subjected to the possibility that The noise may fluctuate.
(e) ios dhcp sample configuration IOS DHCP 5
(e-1) circuit arrangement
Figure 14 shows the another ios dhcp sample configuration IOS DHCP of horizontal drive circuit.This horizontal drive circuit has and is suitable for the configuration from the occasion of external system input of the gray scale reference voltage of time-multiplexed different colours each other.It should be noted that the gray scale reference voltage provides with the numerical data of parallel type.
This horizontal drive circuit comprises the D/A change-over circuit 29, reference voltage on-off circuit 31 of the generation that is used for the gray scale reference voltage and as the sample-and-hold circuit 23 of its critical piece successively from input side.It should be noted that to the foregoing description in total those circuit represent by similar Reference numeral.
In this example, D/A change-over circuit 29 will be input to becoming with the corresponding digital data conversion of single color and the corresponding analogue value of gray scale reference voltage of there with the time division multiplex state.Under the situation of this example, D/A change-over circuit 29 is carried out the D/A switching motion and is entered sample-and-hold circuit 23 in write cycle.In other words, the D/A switch action is carried out in non-light period.
It should be noted that with the corresponding gray scale reference voltage data of single color can be by any order time division multiplex.Basically, the gray scale reference voltage data that is used for three primary colours is transfused to each screen (frame or).
Yet if sample-and-hold circuit 23 keeps the gray scale reference voltage on multi-screen, it is possible importing the D/A switch action with the ratio of a multi-screen.It also is possible only carrying out the D/A switching motion for each gray scale reference voltage data that shields a kind of color or two kinds of colors.
This reference voltage on-off circuit 31 is used for gray scale reference voltage (analogue value) is outputed to corresponding sample-and-hold circuit 23 after D/A switch.This is optionally exported according to time-multiplexed order and is performed.It should be noted that identical in configuration and the ios dhcp sample configuration IOS DHCP 1 of any other part of sample-and-hold circuit 23, therefore omitted its description here.
(e-2) effect that obtains by ios dhcp sample configuration IOS DHCP 5
Under the situation of ios dhcp sample configuration IOS DHCP 5, can be implemented in the minimizing of the number of the wiring route between external system and the horizontal drive circuit (D/A change-over circuit 29).Specifically, when the essential number of the wiring route in ios dhcp sample configuration IOS DHCP 3 was 3 * n (3 looks * n position), the essential number of the wiring route in the ios dhcp sample configuration IOS DHCP 5 can be reduced to n.
Therefore, can reduce the required zone of wiring route pattern.Therefore particularly be incorporated in the occasion of SIC (semiconductor integrated circuit) at horizontal drive circuit, the number of lead-in wire can reduce to 1/3rd, and can realize the miniaturization that encapsulates.Can expect that the assembly area can equally further reduce.Nature is similar to ios dhcp sample configuration IOS DHCP 3 and can reduces the gray scale reference voltage and be subjected to the possibility that The noise may fluctuate.
And, because the essential setting to the gray scale reference voltage of sample-and-hold circuit 23 (sampling keep action) can be reduced to a screen once, in the occasion of gray scale reference voltage data time-division ground input, can provide the stable time enough cycle that is provided with by gray scale reference voltage equally to sample-and-hold circuit 23.In other words, even in the viewing area is increased with the occasion that makes up giant-screen, the gray scale reference voltage also can stably be supplied with D/A change-over circuit 21.
(f) ios dhcp sample configuration IOS DHCP 6
(f-1) circuit arrangement
Figure 15 shows the another ios dhcp sample configuration IOS DHCP of horizontal drive circuit.This horizontal drive circuit is suitable for the occasion of the input of the gray scale reference voltage data in the ios dhcp sample configuration IOS DHCP 5 with the series form execution.Specifically, under the situation of this ios dhcp sample configuration IOS DHCP, the gray scale reference voltage data of series form is imported with the time division multiplex form.
Therefore, in this horizontal drive circuit, arranged S/P change-over circuit 30 so that be converted into the data of parallel form and with the data output of parallel form with the numerical data of series form input at the input side of ios dhcp sample configuration IOS DHCP 5.Naturally, at the time point of data from 30 outputs of S/P change-over circuit, the gray scale reference voltage of parallel form keeps time-multiplexed form.Therefore, identical in the configuration of back level and the ios dhcp sample configuration IOS DHCP 5, and so omitted its description here.
(f-2) effect that obtains by ios dhcp sample configuration IOS DHCP 6
Under the situation of this ios dhcp sample configuration IOS DHCP 6,, can be expected at the further minimizing of the number of the wiring route between external system and the horizontal drive circuit (D/A change-over circuit 29) because S/P change-over circuit 30 is disposed in the prime of ios dhcp sample configuration IOS DHCP 5.Specifically, when the essential number of the wiring route in the ios dhcp sample configuration IOS DHCP 5 equaled number with the corresponding wiring route of bit wide of parallel data, the essential number of the wiring route in the ios dhcp sample configuration IOS DHCP 6 can be reduced to 1.
Therefore, can further reduce the required zone of wiring route pattern.And, equally being incorporated into occasion in the SIC (semiconductor integrated circuit) at horizontal drive circuit, the essential number that is used for the lead-in wire of gray scale reference voltage can reduce to 1, and therefore, can expect the miniaturization that encapsulates.The assembly area can equally further reduce.
(g) ios dhcp sample configuration IOS DHCP 7
(g-1) circuit arrangement
The driving circuit of the function of the luminance with response display-object control viewing area has been described here.The driving circuit and the unit light period (width by scanning impulse provides) when the response display-object of energy conversion gray scale reference voltage specifically, have been described.
In this ios dhcp sample configuration IOS DHCP, note the relation between the display performance of the mankind's visual characteristic and display device.At first, Figure 16 has illustrated human visual characteristic.Figure 16 illustrated brightness and in the mankind can not feel cycle unit interval of any flicker (flash of light) (CFF: the relation between light period critical fusion frequency).The brightness of perpendicular line part is 2L*t, and the brightness of horizontal line part is L*2t.
The human brightness of feeling in cycle unit interval is provided by the area value of the figure that draws on brightness and light period axle.Therefore, the mankind feel that two kinds of light illustrated in fig. 16 have equal brightness.Specifically, human sensation light period is that t second and its brightness are that the light of 2L (by the perpendicular line indication) and light period are that 2t and its brightness are that the light of L (by the horizontal line indication) has equal brightness.
Simultaneously, the display performance of the display device of organic EL device or some other autoluminescence type is worsened by the quantity of electric charge that injects.In other words, luminous luminosity descends.Yet, obtained experimental data: if brightness equates that device lifetime is longer than the occasion that is enhanced in peak value luminosity in the occasion that light period is increased.
Figure 17 has illustrated experimental data.Here, the family curve that obtains by the triangular marker of marking and drawing represents that dutycycle is 25% experimental data.Simultaneously, another family curve that obtains by the square mark of marking and drawing represents that dutycycle is that 50% experimental data and circular mark represent that dutycycle is 75% experimental data.This can see from this situation, be 200[nit such as luminosity] time, the life-span increases along with the increase of light period.
Therefore, in order to prolong the life-span of device, preferably increase light period as much as possible.Yet if light period increases inconsistently, the quality that can occur being called as the phenomenon of " motion image blurring " and making moving image reduces.
Therefore, in this driving circuit, adopted and depended on that display-object is the technology that moving image type or rest image type are come the conversion drive condition.Specifically, be the occasion of the view data of rest image type at display-object, selecting light period is that 2t second and brightness are the drive condition of L.Yet, be the occasion of the view data of moving image type at display-object, selecting light period is that t second and brightness are the drive condition of 2L.
Figure 18 shows the ios dhcp sample configuration IOS DHCP of above-mentioned driving circuit.It should be noted that Figure 18 not only shows driving circuit but also shows the viewing area 32 of the driving target of driving circuit.This driving circuit comprises horizontal drive circuit 33, vertical drive circuit 34 and the drive condition translation circuit 35 that is used to its controlling and driving condition as its critical piece.
Above-mentioned ios dhcp sample configuration IOS DHCP is applied to the horizontal drive circuit 33 in the parts.Specifically, used the horizontal drive circuit that comprises sample-and-hold circuit 23.State in the use in the occasion of this sample-and-hold circuit 23, can expect that stable output also is increased to 2 times or be reduced to 1/2nd with the conversion of gray scale reference voltage (maximum reference voltage).
And vertical drive circuit 34 is integrated the pulse width translation circuit 36 except that known circuit arrangement in addition.This pulse width translation circuit 36 is realized the function of the conversion of control light period.Specifically, one function is selected in 36 realizations of pulse width translation circuit to two the different scanning line options pulse (being also referred to as " scanning impulse ") that illustrates among Figure 19 A and the 19B.
In addition, Figure 19 A has illustrated that light period is the scanning line selection pulse of t.Simultaneously, Figure 19 B has illustrated that light period is another scanning line selection pulse of 2t.Wherein the cycle of scanning line selection pulse with logic " H " level is equivalent to the cycle with the corresponding active component state of being controlled in out of each sub-pixel.In other words, with the corresponding luminescent substance of active component or light-emitting component with cycle of corresponding time of pulse width in luminous.
Naturally, luminosity is the brightness according to the gray scale reference voltage (maximum reference voltage) that applies from horizontal drive circuit 33.Specifically, be the occasion of t at light period, brightness is 2L.On the other hand, be the occasion of 2t at light period, brightness is L.
The conversion action that it should be noted that pulse width translation circuit 36 is controlled by drive condition translation circuit 35.
Specifically, if judge that display-object is the view data of rest image type, then pulse width translation circuit 36 is optionally exported the scanning line selection pulse that light period is 2t (Figure 19 B).On the other hand, if judge that display-object is the view data of moving image type, then pulse width translation circuit 36 is optionally exported another scanning line selection pulse (Figure 19 A) that light period is t.
The circuit arrangement of drive condition translation circuit 35 is described now.Drive condition translation circuit 35 comprises display-object decision circuit 37 and gray scale reference voltage generating circuit 38.Various technology can be used for judging by display-object decision circuit 37 method of display-object.
For example, a kind of available techniques depends on that the difference judgement view data of the input end that view data is transfused to is those rest image types or moving image type.In this example, if view data is imported from antenna input or video inputs, then display-object decision circuit 37 judges that view data are moving image types.On the other hand, if view data is imported from the computing machine input end, then display-object decision circuit 37 judges that view data are rest image types.
Another available techniques will before be shielded with current screen and be compared mutually, and decision making based on a large amount of motion or a spot of motions of current screen displaying.Figure 20 shows the examples of circuits of the display-object decision circuit 37 of the above-mentioned type.In this example, display-object decision circuit 37 comprises previous frame storer 39, current frame memory 40 and motion decision circuit 41.
For example, there is a kind of technology, if wherein showing the number of consistent pixel or the number of image block between this two frame equals greater than 1/2nd, judge that then view data is a rest image, but on the contrary, if it is the moving image type that this number, is then judged view data less than 1/2nd.Also have a kind of method, wherein above-mentioned such judgement is performed, such as the part about near the screen the central authorities of being discovered by vision easily.
It should be noted that the threshold value that will be used to judge is not necessarily limited to above-mentioned sampling number purpose 1/2, but can be greater than or less than 1/2.In other words, should threshold value be set so that result of determination and display result are showed good consistent.
In addition, also have a kind of methods availalbe: the occasion that the mean value of the motion vector on whole screen is equal to or higher than threshold value is judged the input of the view data of moving image type; And have another methods availalbe: be equal to or greater than the fixed level size the occasion that outnumbers threshold value of motion vector judge the input of the view data of moving image type.Equally in those methods, should threshold value be set so that result of determination and display result are showed good consistent.
By adopting above-mentioned such decision technology, even in same program, comprising the scene of a lot of motions and comprising that the conversion drive condition also is possible between another scene of little motion.In a word, the result of determination of being made by display-object decision circuit 37 is provided for above-mentioned pulse width translation circuit 36 and gray scale reference voltage generating circuit 38.It should be noted that decision process is that unit carries out with a screen (frame or field).
Gray scale reference voltage generating circuit 38 comprises one of two kinds of gray scale reference voltages of gray scale reference voltage (simulation) and another gray scale reference voltage (numeral) based on the result of determination generation of display-object decision circuit 37.
Specifically, if the judgement input is the view data of moving image type, then 38 generations of gray scale reference voltage generating circuit are corresponding gray scale reference voltage of light or the gray scale reference voltage data of 2L with brightness.On the other hand, if the judgement input is the view data of rest image type, then 38 generations of gray scale reference voltage generating circuit are corresponding gray scale reference voltage of light or the gray scale reference voltage data of L with brightness.
Should note, when the conversion of the combination of above-mentioned ios dhcp sample configuration IOS DHCP control gray scale reference voltage and light period during, show that between the light period of the corresponding gray scale reference voltage of in cycle unit interval, feeling with the mankind of brightness and each sweep trace the other mode of one of selection in a plurality of (more than three or three) combination of the product that equates also is possible as one between two selections.
(g-2) effect that obtains by ios dhcp sample configuration IOS DHCP 7
Under the situation of this ios dhcp sample configuration IOS DHCP 7, the life-time dilatation of display device can not change the brightness of being discovered by the mankind and be performed.And, because gray scale reference voltage and light period depend on that input image data is that moving image type or rest image type are exchanged control, therefore can prevent the deterioration of " motion image blurring " and some other visual characteristic.
(3) electronic installation
The situation that above-mentioned display device is incorporated into various electronic installations is described here.This electronic installation has been integrated and has been used to the signal processing system (external system) that the horizontal drive circuit of each color is provided gray scale reference voltage or gray scale reference voltage value.
It should be noted that the signal processing of the best integration processing picture signal of this electronic installation.Such as, such signal processing is the conversion of signals part that composite signal is converted to another signal that is fit to the signal format that shown by display panel.
Another above-mentioned such signal processing is the conversion of signals part that the array of the view data of the pel array of the colored pixels on the response display panel is changed.Another such signal processing is the demoder of decoding to compression coded image data (for example, MPEG (moving image encoding expert group) form) image encoded data.
It should be noted that any above-mentioned such signal processing can be used as one of function of the software of carrying out by the electronic installation of having integrated computing machine and is implemented.Figure 21 shows the example of the internal configurations of the electronic installation of realizing above-mentioned such function.
Under the situation of Figure 21, electronic installation comprises display device 42, CPU (central processing unit) (CPU) 43, main storage means 44, sub-memory storage 45 and input media 46.Naturally, the display device of integrating any above-mentioned driving circuit is used for display device 42.
Be incorporated in the electronic installation although it should be noted that Figure 21 indicated number device 42, externally connect yet display device 42 can be used as autonomous device.
In addition, CPU (central processing unit) 43 is used for the control of computing machine and the taking-up and the execution of order.Main storage means 44 is used to describe the temporary transient storage of the program of processing procedure and data.Sub-memory storage 45 is used for the storage of program and data.
Main storage means is used the drive unit of hard disk unit for example or some other magnetic storage medium.Perhaps use the drive unit of compact disk for example or some other optical record mediums.Simultaneously, input media 46 is used for instruction or data are input to computing machine.Input media 46 uses for example mouse, keyboard or some other sensing equipment.
It should be noted that electronic installation preferably integrating communicator whenever necessary.Communication channel can be wire message way or radio channel.And, the best integration networks function of communicator.This electronic installation for example can be applied to pocket telephone, personal digital assistant, the computing machine of having integrated display, vehicular navigation terminal, vending machine, receive ticket door etc. automatically.
Industrial applicibility
According to the one side of this aspect, it is suitable that the characteristics of luminescence of single color can be adjusted to Relation. According to a further aspect in the invention, when with the setting of gray scale reference voltage with supply with also When situation about being repeated in light period is compared, the D/A switch characteristic of D/A change-over circuit Can be stabilized. Thereby, can realize further enhancing and the optimization of display quality.
Claims (20)
1. display panel wherein is the viewing area of arranged as the sub-pixel of minimum display unit and the drive circuit area that is configured to drive with the corresponding active device of described sub-pixel forms on same substrate,
Described drive circuit area comprises:
One group of D/A switch circuit, wherein each described D/A switch circuit is corresponding with a signal line, and is configured to and will becomes the analogue value with the corresponding signal wire data-switching of described signal wire;
The wiring route pattern is configured to and will be applied to respectively in described one group of D/A switch circuit and the corresponding D/A switch circuit of this color with the corresponding gray scale reference voltage of single color; And
Sample-and-hold circuit, be configured in a period of time in the non-light period of described viewing area will with the maintenance of sampling of the corresponding gray scale reference voltage of single color, and in the light period of described viewing area, described gray scale reference voltage is applied to corresponding wiring route pattern.
2. the SIC (semiconductor integrated circuit) with built-in drive circuit is configured to drive the display panel that wherein is arranged as the sub-pixel of minimum display unit,
Described driving circuit comprises:
One group of D/A switch circuit, wherein each described D/A switch circuit is corresponding with a signal line, and is configured to and will becomes the analogue value with the corresponding signal wire data-switching of described signal wire;
The wiring route pattern is configured to and will be applied to respectively in described one group of D/A switch circuit and the corresponding D/A switch circuit of this color with the corresponding gray scale reference voltage of single color; And
Sample-and-hold circuit, be configured in a period of time of the non-light period of described viewing area will with the maintenance of sampling of the corresponding gray scale reference voltage of single color, and in the light period of described viewing area, described gray scale reference voltage is applied to corresponding wiring route pattern.
3. display panel as claimed in claim 1, wherein said gray scale reference voltage are the maximum reference voltage values of described D/A switch circuit.
4. SIC (semiconductor integrated circuit) as claimed in claim 2, wherein said gray scale reference voltage are the maximum reference voltage values of described D/A switch circuit.
5. display panel as claimed in claim 1, wherein said gray scale reference voltage are one or more in the middle reference voltage value of described D/A switch circuit.
6. SIC (semiconductor integrated circuit) as claimed in claim 2, wherein said gray scale reference voltage are one or more in the middle reference voltage value of described D/A switch circuit.
7. display panel as claimed in claim 1 also comprises,
Serial/parallel change-over circuit is configured to convert parallel data with what import as serial data to the corresponding gray scale reference voltage value of each color; And
The D/A switch circuit that is used for the gray scale reference voltage is configured to and will converts the analogue value to the corresponding described parallel data of each color, and the described analogue value is applied to corresponding in a described sample-and-hold circuit circuit.
8. SIC (semiconductor integrated circuit) as claimed in claim 2 also comprises,
Serial/parallel change-over circuit is configured to convert parallel data with what import as serial data to the corresponding gray scale reference voltage of each color; And
The D/A switch circuit that is used for the gray scale reference voltage is configured to and will converts the analogue value to the corresponding described parallel data of each color, and the described analogue value is applied to corresponding in a described sample-and-hold circuit circuit.
9. display panel as claimed in claim 1 also comprises,
The D/A switch circuit that is used for the gray scale reference voltage is configured to convert the analogue value with what import by the time-division multiplexed form to the corresponding described gray scale reference voltage value of color; And
Translation circuit is configured to and will outputs to those circuit of correspondence the described sample-and-hold circuit by the described gray scale reference voltage of the color of time-division output from described D/A switch circuit.
10. SIC (semiconductor integrated circuit) as claimed in claim 2 also comprises,
The D/A switch circuit that is used for the gray scale reference voltage is configured to convert the analogue value with what import by the time-division multiplexed form to the corresponding described gray scale reference voltage value of color; And
Translation circuit is configured to and will outputs to those circuit of correspondence the described sample-and-hold circuit by the described gray scale reference voltage of the color of time-division output from described D/A switch circuit.
11. display panel as claimed in claim 1 also comprises,
Serial/parallel change-over circuit is configured to convert the serial data with the corresponding described gray scale reference voltage value of color by time-division multiplexed form input to parallel data;
The D/A switch circuit that is used for the gray scale reference voltage is configured to and will converts the analogue value separately to the corresponding described parallel data of color; And
Translation circuit is configured to and will outputs to those circuit of correspondence the described sample-and-hold circuit by the described gray scale reference voltage of the color of time-division output from described D/A switch circuit.
12. SIC (semiconductor integrated circuit) as claimed in claim 2 also comprises,
Serial/parallel change-over circuit is configured to convert the serial data with the corresponding described gray scale reference voltage value of color by time-division multiplexed form input to parallel data;
The D/A switch circuit that is used for the gray scale reference voltage is configured to and will converts the analogue value separately to the corresponding described parallel data of color; And
Translation circuit is configured to and will outputs to those circuit of correspondence the described sample-and-hold circuit by the described gray scale reference voltage of the color of time-division output from described D/A switch circuit.
13. display panel as claimed in claim 1 also comprises,
The gray scale reference voltage generating circuit, be configured to produce with the light period that the human corresponding grayscale voltage of feeling in cycle unit interval of brightness and each sweep trace are provided between a plurality of combinations that equate product in any one corresponding grayscale voltage; And
The light period control circuit is configured to the described light period of each sweep trace is controlled to the light period that matches with the grayscale voltage that produces by described gray scale reference voltage generating circuit.
14. SIC (semiconductor integrated circuit) as claimed in claim 2 also comprises,
The gray scale reference voltage generating circuit, be configured to produce with the light period that the human corresponding grayscale voltage of feeling in cycle unit interval of brightness and each sweep trace are provided between a plurality of combinations that equate product in any one corresponding grayscale voltage; And
The light period control circuit is configured to the described light period of each sweep trace is controlled to the light period that matches with the grayscale voltage that produces by described gray scale reference voltage generating circuit.
15. display panel as claimed in claim 1 also comprises,
Decision circuit is configured to judge that display-object is the view data of rest image type or the view data of moving image type;
The gray scale reference voltage generating circuit, be configured to when judging that described display-object is the view data of rest image type, output and the human corresponding gray scale reference voltage of in cycle unit interval, feeling of brightness L, but when judging that described display-object is the view data of described moving image type, output and the human corresponding gray scale reference voltage of in cycle unit interval, feeling of another brightness 2L; And
The light period control circuit, be configured to when judging that described display-object is the view data of rest image type, the described light period of each sweep trace is controlled to be 2t, but when judging that described display-object is the view data of moving image type, the described light period of each sweep trace is controlled to be t.
16. SIC (semiconductor integrated circuit) as claimed in claim 2 also comprises:
Decision circuit is configured to judge that display-object is the view data of rest image type or the view data of moving image type;
The gray scale reference voltage generating circuit, be configured to when judging that described display-object is the view data of rest image type, output and the human corresponding gray scale reference voltage of in cycle unit interval, feeling of brightness L, but when judging that described display-object is the view data of moving image type, output and the human corresponding gray scale reference voltage of in cycle unit interval, feeling of another brightness 2L; And
The light period control circuit, be configured to when judging that described display-object is the view data of rest image type, the described light period of each sweep trace is controlled to be 2t, but when judging that described display-object is the view data of moving image type, the described light period of each sweep trace is controlled to be t.
17. a display device comprises:
Display panel as claimed in claim 1.
18. a display device comprises,
Display panel, wherein the sub-pixel as minimum display unit is arranged; And
SIC (semiconductor integrated circuit) as claimed in claim 2.
19. an electronic installation comprises,
Display panel as claimed in claim 1; And
Signal processing component is configured to the gray scale reference voltage value is applied to described display panel.
20. an electronic installation comprises,
SIC (semiconductor integrated circuit) as claimed in claim 2; And
Signal processing component is configured to the gray scale reference voltage value is applied to described SIC (semiconductor integrated circuit).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004094117A JP2005283702A (en) | 2004-03-29 | 2004-03-29 | Display panel, display apparatus, semiconductor integrated circuit and electronic equipment |
| JP094117/2004 | 2004-03-29 |
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| Publication Number | Publication Date |
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| CN1938743A CN1938743A (en) | 2007-03-28 |
| CN100514414C true CN100514414C (en) | 2009-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005800101196A Expired - Fee Related CN100514414C (en) | 2004-03-29 | 2005-03-16 | Display panel, display device, semiconductor integrated circuit, and electronic device |
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| Country | Link |
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| US (1) | US20070195073A1 (en) |
| JP (1) | JP2005283702A (en) |
| KR (1) | KR20060132931A (en) |
| CN (1) | CN100514414C (en) |
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| WO (1) | WO2005093701A1 (en) |
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-
2004
- 2004-03-29 JP JP2004094117A patent/JP2005283702A/en active Pending
-
2005
- 2005-03-10 TW TW094107373A patent/TWI254894B/en not_active IP Right Cessation
- 2005-03-16 CN CNB2005800101196A patent/CN100514414C/en not_active Expired - Fee Related
- 2005-03-16 US US10/592,663 patent/US20070195073A1/en not_active Abandoned
- 2005-03-16 KR KR1020067018409A patent/KR20060132931A/en not_active Application Discontinuation
- 2005-03-16 WO PCT/JP2005/005308 patent/WO2005093701A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| TW200603042A (en) | 2006-01-16 |
| WO2005093701A1 (en) | 2005-10-06 |
| US20070195073A1 (en) | 2007-08-23 |
| CN1938743A (en) | 2007-03-28 |
| KR20060132931A (en) | 2006-12-22 |
| TWI254894B (en) | 2006-05-11 |
| JP2005283702A (en) | 2005-10-13 |
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